. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Paracentrotus Stomopneustes Pseudocentrotus Pseudoboletia Sphasreehinus Tripneustes Toxopueustes (rynmechiuus Psammechinus Sterechinus Echinus Parechinus Colobocentrotus Heterocentrotus Echinometra Toxocidaris Kehiuostrephus Heliocidaris Pseudechinus Loxechinus. The result of the studies of Echinometrada and Triplechinida represented here, is expressed in the following system. Fam. Stomopneustidae n. fam. The spicules irregular, more or less tubular fenestrated plates. The globiferous pedicellarite without end-tooth1) The st
. The Danish Ingolf-Expedition. Scientific expeditions; Arctic Ocean. Paracentrotus Stomopneustes Pseudocentrotus Pseudoboletia Sphasreehinus Tripneustes Toxopueustes (rynmechiuus Psammechinus Sterechinus Echinus Parechinus Colobocentrotus Heterocentrotus Echinometra Toxocidaris Kehiuostrephus Heliocidaris Pseudechinus Loxechinus. The result of the studies of Echinometrada and Triplechinida represented here, is expressed in the following system. Fam. Stomopneustidae n. fam. The spicules irregular, more or less tubular fenestrated plates. The globiferous pedicellarite without end-tooth1) The stalk compact. Only one genus known. Stomopneustes Ag. The pores trigeminate. Only every fourth or fifth ambulacral plate with primary tubercle, but this tubercle is large and spreads over several ambulacral plates. The spines long and thick; small spines on the buccal plates. The buccal membrane with numerous fine fenestrated plates, quite im- bedded in the skin. The gills with numerous three-radiate spicules. A deep furrow along the median line in the interambulacral areas. ») Perhaps here may be found, besides the large globiferous pedicellariae without end-tooth land without poison gland?), a smaller form of globiferous pedicellariae of the common structure. (See above p. 126).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ingolf (Cruiser); Danish Ingolf-Expedition (1895-1896). Copenhagen : H. Hagerup
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscienti, bookyear1903
